Closure device for paper receptacles



June 6, 1933. lsTow 1,913,213

- CLOSURE nzvxcn FOR PAPER RECEPTACLES' F11 5: July 2, 1932 Y &

- T EY v v k Patented June 6, 1933 PATENT; OFFICE CARL BISTOW, OFBERLIN, GERMANY CLOSURE DEVICE FOR PAPER RECEPTACLES Application filedJuly 2, 1932, Serial No.

The invention relates to a closure device for paper bottles and similarpaper receptacles in which the closure device comprises a cover discsecured on a rim or ledge of the I 5 neck .of the bottle or otherreceptacle, such cover disc being applied to such rim or ledge fromabove. The cover. disc rests on a ledge in the side of the neck of thereceptacle and after having been pressed into position on 19 such ledgeis retained in position thereon by a bead formed by the curling inwardlyof the upper edge of the receptacle neck. In accordance with theinvention the edge of the neck of thereceptacle is provided with a rowof apertures near the upper extremity thereof, so that the upper portionof the neck .of-the receptacle can be torn from the body of thereceptacle.

One of the objects of the invention is to 20 provide a closure devicewhich is to all intents and purposes tamper-proof, i. e. a closuredevice, the removal of which in the first instance may be detected, sothat it is impossible to remove such closure without the fact of suchremoval becoming known to'the person subsequently handling thereceptacle.

' It is a further object of the invention to manufacture the closuredevice in such manner that the cover disc closing the opening 0 ofthe'receptacle can be replaced into the opening of the bottle orreceptacle after the closure device has once been opened, so that suchcover disc can be used as a temporary closing means in the course oi"vthe periodical dispensation of portions of the contents of thereceptacle. In accordance with my invention these results are obtainedby providing a series of apertures throughout the periphery of the upperedgeof the receptacle sofar above the ledge on the inner surface of thereceptacle neck, that after the upper portion of the closure device hasbeen re moved, the cover disc will still be retained in its tightlyfitting position within the bottle opening so as to serve as a temporaryclosing device. y

Specific embodiments of my invention are illustrated in the accompanyingdrawing w forming part of this specification in which similar referencecharacters identify similar 620,565, and in Germany m 15, 1931.

parts in the several views. In such drawing, Fig. 1 is a side view of apaper bottle embodying my invention; Fig. 2 is a top view 7 of thebottle; Fig. 3 is a longitudinal seccover disc in position; Fig. 4 is alongitudinal section through the upper part of the bottle neck with theedge of the receptacle curled inwardly to form the bead retaining thecover disc in position within the bottle neck; Fig. 5 is a partiallongitudinal section of the upper part of the bottle turned 9Q from theposition thereof illustrated in Fig. 3, with the removing tabs flatagainst the upper surface of the cover disc, and showing the series ofapertures in the upper edge of the receptacle; and Fig. 6 illustrates amodified form of my invention in which the-upper edge of the receptacleis curled inwardly to 'form a circular bead.

Slightly removed from the upper edge 1 of the bottle 2, a ledge 3 in theside of the bottle neck is formed, as by pressure of other method knownto those skilled in the art. On the ledge 3 rests a cover disc 4provided with an upwardly extending rim 5 having, preferably at twoopposite points along its periphery, removing tabs or flaps 6. Inaccordance with my novel method of manufacturing the closure device theupper edge 1 of the receptacle is curled inwardly and downwardly'to forma bead 7, of the configuration shown in Figs. 4 and 5 the bead 7retaining the cover disc 4 in its position upon the ledge 3 so that .itcannot be withdrawn or removed from the neck of the receptacle withoutunrolling the bead 7. The side of the receptacle at a point uproximately on the level of the upper of e of :the ri1n5 of the coverdisc 4, or $11 htly ower than such upper edge, is provi ed with a lineof perforations 8, such perforations, being made in the side of thereceptacle either by the tool which is used to form the bead, or by anyother suitable means, before the cover disc 5 is inserted into the neckof the bottle. it will be seen that if it is desire to remove the coverdisc 4 by lifting one of the flaps 6, it is necessary to unwind the head7 by lifting the inwardly and downwardly extending portion thereof. Whenthe configuration of the bead 7 has thus been destroyed by unfurling thesame, it is possible to remove from the bottle the upper portion ofthereceptacle which constituted the upper edge 1, by tearing oil such upperportion along the line of perforations 8. The cover disc 4 may then beremoved to permit the dispensing of the contents of the receptacle andsuch cover disc can be reinserted to effeet a temporary closing of thebottle or receptacle.

In the modification of my invention shown in Fig. 6, the upper edge 1 ofthe bottle is curled inwardly to form a round bead 9 rolled into aconfiguration having a circular cross-section, a line of perforations 8being provided in such construction for the same purpose as in theembodiment illustrated in Figs. g; to 5.

It will be evident from an inspection of the drawing taken inconjunction with the description given hereinabove, that my new andnovel closure device can be easily formed, that it eflects a secureclosure of the receptacle and that it cannot be removed without the factof such removal being evident.

The closure device therefore is effectively tamper-proof, and at thesame time makes possible the use of the cover disc, remain ing inposition within the neck of the receptacle after the tearing away of theupper portion of the closure device, as a temporary closing means forthe receptacle.

While I have described and illustrated my novel closure device asapplied to a milk bottle, it isobvious that its use is not lim-. ited tobottles of the particular configuration used to bottle milk, but isequally applicable for any receptacle having a similar neck formation.

I claim:

1. A closure structure for paper receptacles having a neck portionprovided with an inner peripheral ledge, comprising a cover disc seatedon said ledge and a bead for securing said cover disc on said flangeformed by an inwardly and downwardly curling edge of the receptacle, theedge of the receptacle forming the bead and near the upper edge of therim of the cover disc secured thereby being provided with a series ofapertures extending throughout the circumference of the receptacle,whereby the portion of the receptacle extending above the series ofapertures may be torn off.

2. A closure structure for paper receptacles having a neck ortionprovided with an inner peripheral 1e ge, comprising a cover disc seatedon said ledge and a bead for securing said cover disc on said flangeformed by an inwardly and downwardly curling edge of the receptacle,said cover disc having a rim extending upwardly and so as to be securedentirely within the bead formed by the inward] y curled edge of thereceptacle, the edge of the receptacle forming the bead and near theupper edge of the rim of the cover disc secured thereby being providedwith a series of apertures extending throughout the circumference of thereceptacle, whereby the portion of the receptacle extending above theseries of apertures may be torn ofi.

3. A closure structure as claimed in claim 1 in which the ledge uponwhich the cover disc is seated is at a point below the plane defined bythe series of apertures, the cover disc being held tightly upon its seatin the opening of the receptacle to serve as a temporary closing devicewhen the upper portion of the rece tacle rim forming the bead has beentorn o 4. A closure structure as claimed in claim 2 in which the ledgeupon which the cover disc is seated is at a point below the planedefined by the series of apertures, the cover disc being held tightlyupon its seat in the opening of the receptacle to serve as a temporaryclosing device when the upper portion of the receptacle rim forming thebead has been torn off.

Signed at New York in the county of New York and State of New York this22nd day of June A. D. 1932.

' CARL RISTOW.

